Users simply sign in with their Facebook details and can then receive notifications when they’re deleted. The app can be downloaded on Android and iOS and is also available as a Chrome browser extension.

Who Deleted Me was previously available as a Facebook extension, but this was discontinued over claims that the social network limited what the software could do. It works by saving your friend’s list when you first log-in, and then regularly compares it against your current list, enabling you to see which accounts have deleted you. This means that it won’t be able to tell you anything about accounts that have unfriended you prior to you using the app.